/**
 * jqPlot
 * Pure JavaScript plotting plugin using jQuery
 *
 * Version: 1.0.8
 * Revision: 1250
 *
 * Copyright (c) 2009-2013 Chris Leonello
 * jqPlot is currently available for use in all personal or commercial projects
 * under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL
 * version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can
 * choose the license that best suits your project and use it accordingly.
 *
 * Although not required, the author would appreciate an email letting him
 * know of any substantial use of jqPlot.  You can reach the author at:
 * chris at jqplot dot com or see http://www.jqplot.com/info.php .
 *
 * If you are feeling kind and generous, consider supporting the project by
 * making a donation at: http://www.jqplot.com/donate.php .
 *
 * sprintf functions contained in jqplot.sprintf.js by Ash Searle:
 *
 *     version 2007.04.27
 *     author Ash Searle
 *     http://hexmen.com/blog/2007/03/printf-sprintf/
 *     http://hexmen.com/js/sprintf.js
 *     The author (Ash Searle) has placed this code in the public domain:
 *     "This code is unrestricted: you are free to use it however you like."
 *
 */
define(["jqplot"], function (require, exports, module) {
    var jQuery = require("jquery");
    (function ($) {
        /**
         * Class: $.jqplot.PieRenderer
         * Plugin renderer to draw a pie chart.
         * x values, if present, will be used as slice labels.
         * y values give slice size.
         *
         * To use this renderer, you need to include the
         * pie renderer plugin, for example:
         *
         * > <script type="text/javascript" src="plugins/jqplot.pieRenderer.js"></script>
         *
         * Properties described here are passed into the $.jqplot function
         * as options on the series renderer.  For example:
         *
         * > plot2 = $.jqplot('chart2', [s1, s2], {
     * >     seriesDefaults: {
     * >         renderer:$.jqplot.PieRenderer,
     * >         rendererOptions:{
     * >              sliceMargin: 2,
     * >              startAngle: -90
     * >          }
     * >      }
     * > });
         *
         * A pie plot will trigger events on the plot target
         * according to user interaction.  All events return the event object,
         * the series index, the point (slice) index, and the point data for
         * the appropriate slice.
         *
         * 'jqplotDataMouseOver' - triggered when user mouseing over a slice.
         * 'jqplotDataHighlight' - triggered the first time user mouses over a slice,
         * if highlighting is enabled.
         * 'jqplotDataUnhighlight' - triggered when a user moves the mouse out of
         * a highlighted slice.
         * 'jqplotDataClick' - triggered when the user clicks on a slice.
         * 'jqplotDataRightClick' - tiggered when the user right clicks on a slice if
         * the "captureRightClick" option is set to true on the plot.
         */
        $.jqplot.PieRenderer = function () {
            $.jqplot.LineRenderer.call(this);
        };

        $.jqplot.PieRenderer.prototype = new $.jqplot.LineRenderer();
        $.jqplot.PieRenderer.prototype.constructor = $.jqplot.PieRenderer;

        // called with scope of a series
        $.jqplot.PieRenderer.prototype.init = function (options, plot) {
            // Group: Properties
            //
            // prop: diameter
            // Outer diameter of the pie, auto computed by default
            this.diameter = null;
            // prop: padding
            // padding between the pie and plot edges, legend, etc.
            this.padding = 20;
            // prop: sliceMargin
            // angular spacing between pie slices in degrees.
            this.sliceMargin = 0;
            // prop: fill
            // true or false, whether to fil the slices.
            this.fill = true;
            // prop: shadowOffset
            // offset of the shadow from the slice and offset of
            // each succesive stroke of the shadow from the last.
            this.shadowOffset = 2;
            // prop: shadowAlpha
            // transparency of the shadow (0 = transparent, 1 = opaque)
            this.shadowAlpha = 0.07;
            // prop: shadowDepth
            // number of strokes to apply to the shadow,
            // each stroke offset shadowOffset from the last.
            this.shadowDepth = 5;
            // prop: highlightMouseOver
            // True to highlight slice when moused over.
            // This must be false to enable highlightMouseDown to highlight when clicking on a slice.
            this.highlightMouseOver = true;
            // prop: highlightMouseDown
            // True to highlight when a mouse button is pressed over a slice.
            // This will be disabled if highlightMouseOver is true.
            this.highlightMouseDown = false;
            // prop: highlightColors
            // an array of colors to use when highlighting a slice.
            this.highlightColors = [];
            // prop: dataLabels
            // Either 'label', 'value', 'percent' or an array of labels to place on the pie slices.
            // Defaults to percentage of each pie slice.
            this.dataLabels = 'percent';
            // prop: showDataLabels
            // true to show data labels on slices.
            this.showDataLabels = false;
            // prop: dataLabelFormatString
            // Format string for data labels.  If none, '%s' is used for "label" and for arrays, '%d' for value and '%d%%' for percentage.
            this.dataLabelFormatString = null;
            // prop: dataLabelThreshold
            // Threshhold in percentage (0-100) of pie area, below which no label will be displayed.
            // This applies to all label types, not just to percentage labels.
            this.dataLabelThreshold = 3;
            // prop: dataLabelPositionFactor
            // A Multiplier (0-1) of the pie radius which controls position of label on slice.
            // Increasing will slide label toward edge of pie, decreasing will slide label toward center of pie.
            this.dataLabelPositionFactor = 0.52;
            // prop: dataLabelNudge
            // Number of pixels to slide the label away from (+) or toward (-) the center of the pie.
            this.dataLabelNudge = 2;
            // prop: dataLabelCenterOn
            // True to center the data label at its position.
            // False to set the inside facing edge of the label at its position.
            this.dataLabelCenterOn = true;
            // prop: startAngle
            // Angle to start drawing pie in degrees.
            // According to orientation of canvas coordinate system:
            // 0 = on the positive x axis
            // -90 = on the positive y axis.
            // 90 = on the negaive y axis.
            // 180 or - 180 = on the negative x axis.
            this.startAngle = 0;
            this.tickRenderer = $.jqplot.PieTickRenderer;
            // Used as check for conditions where pie shouldn't be drawn.
            this._drawData = true;
            this._type = 'pie';

            // if user has passed in highlightMouseDown option and not set highlightMouseOver, disable highlightMouseOver
            if (options.highlightMouseDown && options.highlightMouseOver == null) {
                options.highlightMouseOver = false;
            }

            $.extend(true, this, options);

            if (this.sliceMargin < 0) {
                this.sliceMargin = 0;
            }

            this._diameter = null;
            this._radius = null;
            // array of [start,end] angles arrays, one for each slice.  In radians.
            this._sliceAngles = [];
            // index of the currenty highlighted point, if any
            this._highlightedPoint = null;

            // set highlight colors if none provided
            if (this.highlightColors.length == 0) {
                for (var i = 0; i < this.seriesColors.length; i++) {
                    var rgba = $.jqplot.getColorComponents(this.seriesColors[i]);
                    var newrgb = [rgba[0], rgba[1], rgba[2]];
                    var sum = newrgb[0] + newrgb[1] + newrgb[2];
                    for (var j = 0; j < 3; j++) {
                        // when darkening, lowest color component can be is 60.
                        newrgb[j] = (sum > 570) ? newrgb[j] * 0.8 : newrgb[j] + 0.3 * (255 - newrgb[j]);
                        newrgb[j] = parseInt(newrgb[j], 10);
                    }
                    this.highlightColors.push('rgb(' + newrgb[0] + ',' + newrgb[1] + ',' + newrgb[2] + ')');
                }
            }

            this.highlightColorGenerator = new $.jqplot.ColorGenerator(this.highlightColors);

            plot.postParseOptionsHooks.addOnce(postParseOptions);
            plot.postInitHooks.addOnce(postInit);
            plot.eventListenerHooks.addOnce('jqplotMouseMove', handleMove);
            plot.eventListenerHooks.addOnce('jqplotMouseDown', handleMouseDown);
            plot.eventListenerHooks.addOnce('jqplotMouseUp', handleMouseUp);
            plot.eventListenerHooks.addOnce('jqplotClick', handleClick);
            plot.eventListenerHooks.addOnce('jqplotRightClick', handleRightClick);
            plot.postDrawHooks.addOnce(postPlotDraw);
        };

        $.jqplot.PieRenderer.prototype.setGridData = function (plot) {
            // set gridData property.  This will hold angle in radians of each data point.
            var stack = [];
            var td = [];
            var sa = this.startAngle / 180 * Math.PI;
            var tot = 0;
            // don't know if we have any valid data yet, so set plot to not draw.
            this._drawData = false;
            for (var i = 0; i < this.data.length; i++) {
                if (this.data[i][1] != 0) {
                    // we have data, O.K. to draw.
                    this._drawData = true;
                }
                stack.push(this.data[i][1]);
                td.push([this.data[i][0]]);
                if (i > 0) {
                    stack[i] += stack[i - 1];
                }
                tot += this.data[i][1];
            }
            var fact = Math.PI * 2 / stack[stack.length - 1];

            for (var i = 0; i < stack.length; i++) {
                td[i][1] = stack[i] * fact;
                td[i][2] = this.data[i][1] / tot;
            }
            this.gridData = td;
        };

        $.jqplot.PieRenderer.prototype.makeGridData = function (data, plot) {
            var stack = [];
            var td = [];
            var tot = 0;
            var sa = this.startAngle / 180 * Math.PI;
            // don't know if we have any valid data yet, so set plot to not draw.
            this._drawData = false;
            for (var i = 0; i < data.length; i++) {
                if (this.data[i][1] != 0) {
                    // we have data, O.K. to draw.
                    this._drawData = true;
                }
                stack.push(data[i][1]);
                td.push([data[i][0]]);
                if (i > 0) {
                    stack[i] += stack[i - 1];
                }
                tot += data[i][1];
            }
            var fact = Math.PI * 2 / stack[stack.length - 1];

            for (var i = 0; i < stack.length; i++) {
                td[i][1] = stack[i] * fact;
                td[i][2] = data[i][1] / tot;
            }
            return td;
        };

        function calcRadiusAdjustment(ang) {
            return Math.sin((ang - (ang - Math.PI) / 8 / Math.PI ) / 2.0);
        }

        function calcRPrime(ang1, ang2, sliceMargin, fill, lineWidth) {
            var rprime = 0;
            var ang = ang2 - ang1;
            var absang = Math.abs(ang);
            var sm = sliceMargin;
            if (fill == false) {
                sm += lineWidth;
            }

            if (sm > 0 && absang > 0.01 && absang < 6.282) {
                rprime = parseFloat(sm) / 2.0 / calcRadiusAdjustment(ang);
            }

            return rprime;
        }

        $.jqplot.PieRenderer.prototype.drawSlice = function (ctx, ang1, ang2, color, isShadow) {
            if (this._drawData) {
                var r = this._radius;
                var fill = this.fill;
                var lineWidth = this.lineWidth;
                var sm = this.sliceMargin;
                if (this.fill == false) {
                    sm += this.lineWidth;
                }
                ctx.save();
                ctx.translate(this._center[0], this._center[1]);

                var rprime = calcRPrime(ang1, ang2, this.sliceMargin, this.fill, this.lineWidth);

                var transx = rprime * Math.cos((ang1 + ang2) / 2.0);
                var transy = rprime * Math.sin((ang1 + ang2) / 2.0);

                if ((ang2 - ang1) <= Math.PI) {
                    r -= rprime;
                }
                else {
                    r += rprime;
                }

                ctx.translate(transx, transy);

                if (isShadow) {
                    for (var i = 0, l = this.shadowDepth; i < l; i++) {
                        ctx.save();
                        ctx.translate(this.shadowOffset * Math.cos(this.shadowAngle / 180 * Math.PI), this.shadowOffset * Math.sin(this.shadowAngle / 180 * Math.PI));
                        doDraw(r);
                    }
                    for (var i = 0, l = this.shadowDepth; i < l; i++) {
                        ctx.restore();
                    }
                }

                else {
                    doDraw(r);
                }
                ctx.restore();
            }

            function doDraw(rad) {
                // Fix for IE and Chrome that can't seem to draw circles correctly.
                // ang2 should always be <= 2 pi since that is the way the data is converted.
                // 2Pi = 6.2831853, Pi = 3.1415927
                if (ang2 > 6.282 + this.startAngle) {
                    ang2 = 6.282 + this.startAngle;
                    if (ang1 > ang2) {
                        ang1 = 6.281 + this.startAngle;
                    }
                }
                // Fix for IE, where it can't seem to handle 0 degree angles.  Also avoids
                // ugly line on unfilled pies.
                if (ang1 >= ang2) {
                    return;
                }

                ctx.beginPath();
                ctx.fillStyle = color;
                ctx.strokeStyle = color;
                ctx.lineWidth = lineWidth;
                ctx.arc(0, 0, rad, ang1, ang2, false);
                ctx.lineTo(0, 0);
                ctx.closePath();

                if (fill) {
                    ctx.fill();
                }
                else {
                    ctx.stroke();
                }
            }
        };

        // called with scope of series
        $.jqplot.PieRenderer.prototype.draw = function (ctx, gd, options, plot) {
            var i;
            var opts = (options != undefined) ? options : {};
            // offset and direction of offset due to legend placement
            var offx = 0;
            var offy = 0;
            var trans = 1;
            var colorGenerator = new $.jqplot.ColorGenerator(this.seriesColors);
            if (options.legendInfo && options.legendInfo.placement == 'insideGrid') {
                var li = options.legendInfo;
                switch (li.location) {
                    case 'nw':
                        offx = li.width + li.xoffset;
                        break;
                    case 'w':
                        offx = li.width + li.xoffset;
                        break;
                    case 'sw':
                        offx = li.width + li.xoffset;
                        break;
                    case 'ne':
                        offx = li.width + li.xoffset;
                        trans = -1;
                        break;
                    case 'e':
                        offx = li.width + li.xoffset;
                        trans = -1;
                        break;
                    case 'se':
                        offx = li.width + li.xoffset;
                        trans = -1;
                        break;
                    case 'n':
                        offy = li.height + li.yoffset;
                        break;
                    case 's':
                        offy = li.height + li.yoffset;
                        trans = -1;
                        break;
                    default:
                        break;
                }
            }

            var shadow = (opts.shadow != undefined) ? opts.shadow : this.shadow;
            var fill = (opts.fill != undefined) ? opts.fill : this.fill;
            var cw = ctx.canvas.width;
            var ch = ctx.canvas.height;
            var w = cw - offx - 2 * this.padding;
            var h = ch - offy - 2 * this.padding;
            var mindim = Math.min(w, h);
            var d = mindim;

            // Fixes issue #272.  Thanks hugwijst!
            // reset slice angles array.
            this._sliceAngles = [];

            var sm = this.sliceMargin;
            if (this.fill == false) {
                sm += this.lineWidth;
            }

            var rprime;
            var maxrprime = 0;

            var ang, ang1, ang2, shadowColor;
            var sa = this.startAngle / 180 * Math.PI;

            // have to pre-draw shadows, so loop throgh here and calculate some values also.
            for (var i = 0, l = gd.length; i < l; i++) {
                ang1 = (i == 0) ? sa : gd[i - 1][1] + sa;
                ang2 = gd[i][1] + sa;

                this._sliceAngles.push([ang1, ang2]);

                rprime = calcRPrime(ang1, ang2, this.sliceMargin, this.fill, this.lineWidth);

                if (Math.abs(ang2 - ang1) > Math.PI) {
                    maxrprime = Math.max(rprime, maxrprime);
                }
            }

            if (this.diameter != null && this.diameter > 0) {
                this._diameter = this.diameter - 2 * maxrprime;
            }
            else {
                this._diameter = d - 2 * maxrprime;
            }

            // Need to check for undersized pie.  This can happen if
            // plot area too small and legend is too big.
            if (this._diameter < 6) {
                $.jqplot.log('Diameter of pie too small, not rendering.');
                return;
            }

            var r = this._radius = this._diameter / 2;

            this._center = [(cw - trans * offx) / 2 + trans * offx + maxrprime * Math.cos(sa), (ch - trans * offy) / 2 + trans * offy + maxrprime * Math.sin(sa)];

            if (this.shadow) {
                for (var i = 0, l = gd.length; i < l; i++) {
                    shadowColor = 'rgba(0,0,0,' + this.shadowAlpha + ')';
                    this.renderer.drawSlice.call(this, ctx, this._sliceAngles[i][0], this._sliceAngles[i][1], shadowColor, true);
                }
            }

            for (var i = 0; i < gd.length; i++) {

                this.renderer.drawSlice.call(this, ctx, this._sliceAngles[i][0], this._sliceAngles[i][1], colorGenerator.next(), false);

                if (this.showDataLabels && gd[i][2] * 100 >= this.dataLabelThreshold) {
                    var fstr, avgang = (this._sliceAngles[i][0] + this._sliceAngles[i][1]) / 2, label;

                    if (this.dataLabels == 'label') {
                        fstr = this.dataLabelFormatString || '%s';
                        label = $.jqplot.sprintf(fstr, gd[i][0]);
                    }
                    else if (this.dataLabels == 'value') {
                        fstr = this.dataLabelFormatString || '%d';
                        label = $.jqplot.sprintf(fstr, this.data[i][1]);
                    }
                    else if (this.dataLabels == 'percent') {
                        fstr = this.dataLabelFormatString || '%d%%';
                        label = $.jqplot.sprintf(fstr, gd[i][2] * 100);
                    }
                    else if (this.dataLabels.constructor == Array) {
                        fstr = this.dataLabelFormatString || '%s';
                        label = $.jqplot.sprintf(fstr, this.dataLabels[i]);
                    }

                    var fact = (this._radius ) * this.dataLabelPositionFactor + this.sliceMargin + this.dataLabelNudge;

                    var x = this._center[0] + Math.cos(avgang) * fact + this.canvas._offsets.left;
                    var y = this._center[1] + Math.sin(avgang) * fact + this.canvas._offsets.top;

                    var labelelem = $('<div class="jqplot-pie-series jqplot-data-label" style="position:absolute;">' + label + '</div>').insertBefore(plot.eventCanvas._elem);
                    if (this.dataLabelCenterOn) {
                        x -= labelelem.width() / 2;
                        y -= labelelem.height() / 2;
                    }
                    else {
                        x -= labelelem.width() * Math.sin(avgang / 2);
                        y -= labelelem.height() / 2;
                    }
                    x = Math.round(x);
                    y = Math.round(y);
                    labelelem.css({left: x, top: y});
                }
            }
        };

        $.jqplot.PieAxisRenderer = function () {
            $.jqplot.LinearAxisRenderer.call(this);
        };

        $.jqplot.PieAxisRenderer.prototype = new $.jqplot.LinearAxisRenderer();
        $.jqplot.PieAxisRenderer.prototype.constructor = $.jqplot.PieAxisRenderer;


        // There are no traditional axes on a pie chart.  We just need to provide
        // dummy objects with properties so the plot will render.
        // called with scope of axis object.
        $.jqplot.PieAxisRenderer.prototype.init = function (options) {
            //
            this.tickRenderer = $.jqplot.PieTickRenderer;
            $.extend(true, this, options);
            // I don't think I'm going to need _dataBounds here.
            // have to go Axis scaling in a way to fit chart onto plot area
            // and provide u2p and p2u functionality for mouse cursor, etc.
            // for convienence set _dataBounds to 0 and 100 and
            // set min/max to 0 and 100.
            this._dataBounds = {min: 0, max: 100};
            this.min = 0;
            this.max = 100;
            this.showTicks = false;
            this.ticks = [];
            this.showMark = false;
            this.show = false;
        };


        $.jqplot.PieLegendRenderer = function () {
            $.jqplot.TableLegendRenderer.call(this);
        };

        $.jqplot.PieLegendRenderer.prototype = new $.jqplot.TableLegendRenderer();
        $.jqplot.PieLegendRenderer.prototype.constructor = $.jqplot.PieLegendRenderer;

        /**
         * Class: $.jqplot.PieLegendRenderer
         * Legend Renderer specific to pie plots.  Set by default
         * when user creates a pie plot.
         */
        $.jqplot.PieLegendRenderer.prototype.init = function (options) {
            // Group: Properties
            //
            // prop: numberRows
            // Maximum number of rows in the legend.  0 or null for unlimited.
            this.numberRows = null;
            // prop: numberColumns
            // Maximum number of columns in the legend.  0 or null for unlimited.
            this.numberColumns = null;
            $.extend(true, this, options);
        };

        // called with context of legend
        $.jqplot.PieLegendRenderer.prototype.draw = function () {
            var legend = this;
            if (this.show) {
                var series = this._series;


                this._elem = $(document.createElement('table'));
                this._elem.addClass('jqplot-table-legend');

                var ss = {position: 'absolute'};
                if (this.background) {
                    ss['background'] = this.background;
                }
                if (this.border) {
                    ss['border'] = this.border;
                }
                if (this.fontSize) {
                    ss['fontSize'] = this.fontSize;
                }
                if (this.fontFamily) {
                    ss['fontFamily'] = this.fontFamily;
                }
                if (this.textColor) {
                    ss['textColor'] = this.textColor;
                }
                if (this.marginTop != null) {
                    ss['marginTop'] = this.marginTop;
                }
                if (this.marginBottom != null) {
                    ss['marginBottom'] = this.marginBottom;
                }
                if (this.marginLeft != null) {
                    ss['marginLeft'] = this.marginLeft;
                }
                if (this.marginRight != null) {
                    ss['marginRight'] = this.marginRight;
                }

                this._elem.css(ss);

                // Pie charts legends don't go by number of series, but by number of data points
                // in the series.  Refactor things here for that.

                var pad = false,
                    reverse = false,
                    nr,
                    nc;
                var s = series[0];
                var colorGenerator = new $.jqplot.ColorGenerator(s.seriesColors);

                if (s.show) {
                    var pd = s.data;
                    if (this.numberRows) {
                        nr = this.numberRows;
                        if (!this.numberColumns) {
                            nc = Math.ceil(pd.length / nr);
                        }
                        else {
                            nc = this.numberColumns;
                        }
                    }
                    else if (this.numberColumns) {
                        nc = this.numberColumns;
                        nr = Math.ceil(pd.length / this.numberColumns);
                    }
                    else {
                        nr = pd.length;
                        nc = 1;
                    }

                    var i, j;
                    var tr, td1, td2;
                    var lt, rs, color;
                    var idx = 0;
                    var div0, div1;

                    for (i = 0; i < nr; i++) {
                        tr = $(document.createElement('tr'));
                        tr.addClass('jqplot-table-legend');

                        if (reverse) {
                            tr.prependTo(this._elem);
                        }

                        else {
                            tr.appendTo(this._elem);
                        }

                        for (j = 0; j < nc; j++) {
                            if (idx < pd.length) {
                                lt = this.labels[idx] || pd[idx][0].toString();
                                color = colorGenerator.next();
                                if (!reverse) {
                                    if (i > 0) {
                                        pad = true;
                                    }
                                    else {
                                        pad = false;
                                    }
                                }
                                else {
                                    if (i == nr - 1) {
                                        pad = false;
                                    }
                                    else {
                                        pad = true;
                                    }
                                }
                                rs = (pad) ? this.rowSpacing : '0';


                                td1 = $(document.createElement('td'));
                                td1.addClass('jqplot-table-legend jqplot-table-legend-swatch');
                                td1.css({textAlign: 'center', paddingTop: rs});

                                div0 = $(document.createElement('div'));
                                div0.addClass('jqplot-table-legend-swatch-outline');
                                div1 = $(document.createElement('div'));
                                div1.addClass('jqplot-table-legend-swatch');
                                div1.css({backgroundColor: color, borderColor: color});
                                td1.append(div0.append(div1));

                                td2 = $(document.createElement('td'));
                                td2.addClass('jqplot-table-legend jqplot-table-legend-label');
                                td2.css('paddingTop', rs);

                                if (this.escapeHtml) {
                                    td2.text(lt);
                                }
                                else {
                                    td2.html(lt);
                                }
                                if (reverse) {
                                    td2.prependTo(tr);
                                    td1.prependTo(tr);
                                }
                                else {
                                    td1.appendTo(tr);
                                    td2.appendTo(tr);
                                }
                                pad = true;
                            }
                            idx++;
                        }
                    }
                }
            }
            return this._elem;
        };

        $.jqplot.PieRenderer.prototype.handleMove = function (ev, gridpos, datapos, neighbor, plot) {
            if (neighbor) {
                var ins = [neighbor.seriesIndex, neighbor.pointIndex, neighbor.data];
                plot.target.trigger('jqplotDataMouseOver', ins);
                if (plot.series[ins[0]].highlightMouseOver && !(ins[0] == plot.plugins.pieRenderer.highlightedSeriesIndex && ins[1] == plot.series[ins[0]]._highlightedPoint)) {
                    plot.target.trigger('jqplotDataHighlight', ins);
                    highlight(plot, ins[0], ins[1]);
                }
            }
            else if (neighbor == null) {
                unhighlight(plot);
            }
        };


        // this.eventCanvas._elem.bind($.jqplot.eventListenerHooks[i][0], {plot:this}, $.jqplot.eventListenerHooks[i][1]);

        // setup default renderers for axes and legend so user doesn't have to
        // called with scope of plot
        function preInit(target, data, options) {
            options = options || {};
            options.axesDefaults = options.axesDefaults || {};
            options.legend = options.legend || {};
            options.seriesDefaults = options.seriesDefaults || {};
            // only set these if there is a pie series
            var setopts = false;
            if (options.seriesDefaults.renderer == $.jqplot.PieRenderer) {
                setopts = true;
            }
            else if (options.series) {
                for (var i = 0; i < options.series.length; i++) {
                    if (options.series[i].renderer == $.jqplot.PieRenderer) {
                        setopts = true;
                    }
                }
            }

            if (setopts) {
                options.axesDefaults.renderer = $.jqplot.PieAxisRenderer;
                options.legend.renderer = $.jqplot.PieLegendRenderer;
                options.legend.preDraw = true;
                options.seriesDefaults.pointLabels = {show: false};
            }
        }

        function postInit(target, data, options) {
            for (var i = 0; i < this.series.length; i++) {
                if (this.series[i].renderer.constructor == $.jqplot.PieRenderer) {
                    // don't allow mouseover and mousedown at same time.
                    if (this.series[i].highlightMouseOver) {
                        this.series[i].highlightMouseDown = false;
                    }
                }
            }
        }

        // called with scope of plot
        function postParseOptions(options) {
            for (var i = 0; i < this.series.length; i++) {
                this.series[i].seriesColors = this.seriesColors;
                this.series[i].colorGenerator = $.jqplot.colorGenerator;
            }
        }

        function highlight(plot, sidx, pidx) {
            var s = plot.series[sidx];
            var canvas = plot.plugins.pieRenderer.highlightCanvas;
            canvas._ctx.clearRect(0, 0, canvas._ctx.canvas.width, canvas._ctx.canvas.height);
            s._highlightedPoint = pidx;
            plot.plugins.pieRenderer.highlightedSeriesIndex = sidx;
            s.renderer.drawSlice.call(s, canvas._ctx, s._sliceAngles[pidx][0], s._sliceAngles[pidx][1], s.highlightColorGenerator.get(pidx), false);
        }

        function unhighlight(plot) {
            var canvas = plot.plugins.pieRenderer.highlightCanvas;
            canvas._ctx.clearRect(0, 0, canvas._ctx.canvas.width, canvas._ctx.canvas.height);
            for (var i = 0; i < plot.series.length; i++) {
                plot.series[i]._highlightedPoint = null;
            }
            plot.plugins.pieRenderer.highlightedSeriesIndex = null;
            plot.target.trigger('jqplotDataUnhighlight');
        }

        function handleMove(ev, gridpos, datapos, neighbor, plot) {
            if (neighbor) {
                var ins = [neighbor.seriesIndex, neighbor.pointIndex, neighbor.data];
                var evt1 = jQuery.Event('jqplotDataMouseOver');
                evt1.pageX = ev.pageX;
                evt1.pageY = ev.pageY;
                plot.target.trigger(evt1, ins);
                if (plot.series[ins[0]].highlightMouseOver && !(ins[0] == plot.plugins.pieRenderer.highlightedSeriesIndex && ins[1] == plot.series[ins[0]]._highlightedPoint)) {
                    var evt = jQuery.Event('jqplotDataHighlight');
                    evt.which = ev.which;
                    evt.pageX = ev.pageX;
                    evt.pageY = ev.pageY;
                    plot.target.trigger(evt, ins);
                    highlight(plot, ins[0], ins[1]);
                }
            }
            else if (neighbor == null) {
                unhighlight(plot);
            }
        }

        function handleMouseDown(ev, gridpos, datapos, neighbor, plot) {
            if (neighbor) {
                var ins = [neighbor.seriesIndex, neighbor.pointIndex, neighbor.data];
                if (plot.series[ins[0]].highlightMouseDown && !(ins[0] == plot.plugins.pieRenderer.highlightedSeriesIndex && ins[1] == plot.series[ins[0]]._highlightedPoint)) {
                    var evt = jQuery.Event('jqplotDataHighlight');
                    evt.which = ev.which;
                    evt.pageX = ev.pageX;
                    evt.pageY = ev.pageY;
                    plot.target.trigger(evt, ins);
                    highlight(plot, ins[0], ins[1]);
                }
            }
            else if (neighbor == null) {
                unhighlight(plot);
            }
        }

        function handleMouseUp(ev, gridpos, datapos, neighbor, plot) {
            var idx = plot.plugins.pieRenderer.highlightedSeriesIndex;
            if (idx != null && plot.series[idx].highlightMouseDown) {
                unhighlight(plot);
            }
        }

        function handleClick(ev, gridpos, datapos, neighbor, plot) {
            if (neighbor) {
                var ins = [neighbor.seriesIndex, neighbor.pointIndex, neighbor.data];
                var evt = jQuery.Event('jqplotDataClick');
                evt.which = ev.which;
                evt.pageX = ev.pageX;
                evt.pageY = ev.pageY;
                plot.target.trigger(evt, ins);
            }
        }

        function handleRightClick(ev, gridpos, datapos, neighbor, plot) {
            if (neighbor) {
                var ins = [neighbor.seriesIndex, neighbor.pointIndex, neighbor.data];
                var idx = plot.plugins.pieRenderer.highlightedSeriesIndex;
                if (idx != null && plot.series[idx].highlightMouseDown) {
                    unhighlight(plot);
                }
                var evt = jQuery.Event('jqplotDataRightClick');
                evt.which = ev.which;
                evt.pageX = ev.pageX;
                evt.pageY = ev.pageY;
                plot.target.trigger(evt, ins);
            }
        }

        // called within context of plot
        // create a canvas which we can draw on.
        // insert it before the eventCanvas, so eventCanvas will still capture events.
        function postPlotDraw() {
            // Memory Leaks patch
            if (this.plugins.pieRenderer && this.plugins.pieRenderer.highlightCanvas) {
                this.plugins.pieRenderer.highlightCanvas.resetCanvas();
                this.plugins.pieRenderer.highlightCanvas = null;
            }

            this.plugins.pieRenderer = {highlightedSeriesIndex: null};
            this.plugins.pieRenderer.highlightCanvas = new $.jqplot.GenericCanvas();

            // do we have any data labels?  if so, put highlight canvas before those
            var labels = $(this.targetId + ' .jqplot-data-label');
            if (labels.length) {
                $(labels[0]).before(this.plugins.pieRenderer.highlightCanvas.createElement(this._gridPadding, 'jqplot-pieRenderer-highlight-canvas', this._plotDimensions, this));
            }
            // else put highlight canvas before event canvas.
            else {
                this.eventCanvas._elem.before(this.plugins.pieRenderer.highlightCanvas.createElement(this._gridPadding, 'jqplot-pieRenderer-highlight-canvas', this._plotDimensions, this));
            }

            var hctx = this.plugins.pieRenderer.highlightCanvas.setContext();
            this.eventCanvas._elem.bind('mouseleave', {plot: this}, function (ev) {
                unhighlight(ev.data.plot);
            });
        }

        $.jqplot.preInitHooks.push(preInit);

        $.jqplot.PieTickRenderer = function () {
            $.jqplot.AxisTickRenderer.call(this);
        };

        $.jqplot.PieTickRenderer.prototype = new $.jqplot.AxisTickRenderer();
        $.jqplot.PieTickRenderer.prototype.constructor = $.jqplot.PieTickRenderer;

    })(jQuery);
});
